Well I don't get what the other parts of the question is asking, but they can make 240 packs of pencils.
The only thing you can do with this expression is to factor a 5 out of the two terms: we have

Answer:
2 groups and 1 score for each participant
Step-by-step explanation:
An independent measures design is a defined as a research method whereby multiple experimental groups are examined and the participants will only be in one group. Now, each participant will only be affected by one condition of the independent variable during the experiment.
In the question given, we want to use the method I just described to compare two treatment conditions.
This means that there will be two groups and each participant in both groups will be assigned one score.
There was already a question like this on here so i’m going off the answer already given: 30 hours, i hope it’s right
So work =time times rate or W=TR
so T=m-k
W=(m-k)R
if you want just m-k then m-k is the answer